I have back pain due to degenerative disc disease as well as "all over" pain caused by fibromyalgia. Oxycontin helps quite a bit and I would like to continue taking it. I saw a pharmacologist for the first time today and she prescribed me Oxycontin but I havent taken it in a week or so. She is testing me to make sure I have been taking it so I am worried that she will stop prescribing it. My last doctor only gave me enough to last me a short while which is why I ran out. I'm not sure how long I have to be taking it in order for it to show up in my blood and/or urine. Any help would be much appreciated. Thank you